Here's the proper way to delete the Windows.old and $Windows.BT folders: 1  Click Start and type in disk cleanup (no quotes). Wait for the Disk Cleanup utility to show up in the Start menu and click it. 2  A window will appear asking you which hard drive you want to clean up. Choose the C drive (which is default) and click OK.
The A-and B-type HCs are very similar in appearance in the rabbit retina too. Other species may have more than two types of horizontal cell and often these other types are concerned with color coding (see chapter on Horizontal cells by Perlman et al., webvision).
Glial cells of the Retina by Helga Kolb. Helga Kolb. Three basic types of glial cell are found in the human retina, Muller cells, astroglia and microglia. All were described for the retina by Cajal more than one hundred years ago (1892).1. Muller cells. Muller cells are the principal glial cell of the retina.elga Kolb. Three basic types of glial cell are found in the human retina, Muller cells, astroglia and microglia. All were described for the retina by Cajal more than one hundred years ago (1892).